# US 2019/0246199 A1 · Open-back linear bi-directional cabinet for speaker driver

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- Number: US 2019/0246199 A1
- Document ID: US20190246199A1
- Status: Published application
- Kind: A1
- Application number: 15/889,960
- Filed: 2018-02-06
- Published: 2019-08-08
- Earliest claimed: 2018-02-06
- Inventors: Jeffrey P. North
- Web page: https://patentgrep.com/patent/US20190246199A1

## CPC

- H04R 1/2811: {for loudspeaker transducers}
- H04R 1/025: {Arrangements for fixing loudspeaker transducers, e.g. in a box, furniture}
- H04R 31/00: Apparatus or processes specially adapted for the manufacture of transducers or diaphragms therefor {(manufacture of microstructural arrangements of deformable or non-deformable structures in general B81C1/00182)}
- H04R: LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; ELECTRIC HEARING AIDS; PUBLIC ADDRESS SYSTEMS (producing sounds with frequency not determined by supply frequency G10K)

## Abstract

A cabinet for housing a round, open-back, cone type driver. The cabinet includes a barrel-shaped internal wall that has first and second opposing open ends and a substantially circular cross section. The diameter of the cross section at the midpoint of the internal wall is greater than the diameter of the internal wall at the opposing open ends. A mounting ring is secured to the internal wall between approximately a front quarter and a back quarter of the cabinet, configured for receiving the driver.

## Claims

### Claim 1

A cabinet for housing a round, open-back, cone type driver, comprising:
a barrel-shaped internal wall comprising first and second opposing open ends and a substantially circular cross section, wherein the diameter of the cross section at the midpoint of the internal wall is greater than the diameter of the internal wall at the opposing open ends; and
a mounting ring, configured for receiving the driver, secured to the internal wall at a position offset from the center of the cabinet such that the center of the cone portion of the driver aligns with the center of the cabinet.

### Claim 2

(canceled)

### Claim 3 (depends on 1)

The cabinet according to claim 1, wherein a length of the cabinet is between approximately 100% to 250% of the diameter of the cone portion of the driver.

### Claim 4 (depends on 3)

The cabinet according to claim 3, wherein the length of the cabinet is approximately 200% of the diameter of the cone portion of the driver.

### Claim 5 (depends on 1)

The cabinet according to claim 1, wherein the diameter of the cross section at the midpoint of the internal wall is between approximately 100% to 250% of the diameter of the cone portion of the driver.

### Claim 6 (depends on 5)

The cabinet according to claim 5, wherein the diameter of the cross section at the midpoint of the internal wall is approximately 110% of the diameter of the cone portion of the driver.

### Claim 7 (depends on 1)

The cabinet according to claim 1, wherein the diameters of the opposing open ends are between approximately 50% to 250% of the diameter of the cone portion of the driver.

### Claim 8 (depends on 7)

The cabinet according to claim 7, wherein the diameters of the opposing open ends are approximately 100% of the diameter of the cone portion of the driver.

### Claim 9 (depends on 1)

The cabinet according to claim 1, wherein the cabinet is manufactured using an injection molding process.

### Claim 10

A method for simulating a genuine infinite baffle, comprising:
providing a barrel-shaped internal wall comprising first and second opposing open ends and a substantially circular cross section, wherein the diameter of the cross section at the midpoint of the internal wall is greater than the diameter of the internal wall at the opposing open ends;
providing a mounting ring configured for receiving a round, open-back, cone type driver;
securing the mounting ring to the internal wall at a position offset from the center of the cabinet such that the center of the cone portion of the driver aligns with the center of the cabinet; and
using the driver to convert an electrical audio signal to sound pressure waves that are directed to the first and second opposing ends.

### Claim 11 (depends on 10)

The method of claim 10, wherein the sound pressure waves directed to the first and second opposing ends pass substantially unobstructed through the opposing open ends.

### Claim 12

(canceled)

### Claim 13

(canceled)

### Claim 14

(canceled)

### Claim 15

(canceled)